Generate maps and offline dataset code

[SongDoHou]

Hi, thank you for sharing the work and code.

I believe there are some issues with the generation of the offline dataset part (CasesSolver_cropfromMap_fixedLength.py). When I generate 10 maps with 10 cases using "Generate_cropmap.py" and then create an offline dataset using "CasesSolver_cropfromMap_fixedLength.py," it appears to only consider the first map file (Map_ID00000.png).

Additionally, I noticed that the "Map_ID00000.png" generated from both "Generate_cropmap.py" and "CasesSolver_cropfromMap_fixedLength.py" appears to be different."

Thank you.